Figure 12: Images from KVNX (Vance AFB, Oklahoma) WSR-88D radar at 1155 UTC 24 April 2006. Left image is a 4 panel of Reflectivity with 0.5, 1.5, 2.4, and 3.4 degree slices. Right image is the corresponding SRM 4 panel for the same slices. The Wichita supercell is depicted in the top left image. The right image of SRM has a strong rotation couplet highlighted within the overlayed white oval circle. At this time (1155 UTC) and even one volume scan earlier, there was a strong elevated reflectivity core with several pixels of >57 DBZ above the minus 20 degree celsius height (estimated at 21,700 ft AGL). is the U.S. government's official web portal to all federal, state and local government web resources and services.